Since the mounting arm fits on either collar, the weapon can certainly be wielded with the left arm. ^^

Just by weapon count (for hand held type), Gundam Astraea's armament list is a bit shorter than Gundam Exia's: six (GN Beam Rifle, GN Launcher, Proto GN Sword, GN Shield, GN Beam Saber/Dagger x2) versus eight(GN Sword - two modes, GN Shield, GN Long, Short Blades, GN Beam Saber/Dagger x4), but the interchangeability of Gundam Astraea's weapons to be wielded by either hands is a lot more fun than Gundam Exia I think. ^^ All of Gundam Astraea's unique weapons - the rifle, launcher and sword can be used by either hands, which is much cooler than Gundam Exia's right arm-restricted GN Sword. ^^;

As a matter of fact, the only weapon (if you call it a weapon) that doesn't have that interchangeability is the shield, but nobody really cares about the shield I suppose. XD

The last posting for this kit coming up next will feature a comparison with its successor unit. ^^